package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Collection;

public class JDBCDemo3 {
    public static void main(String[] args){


        try(Connection connection=DBUtil.getConnection();) {

            Statement statement = connection.createStatement();
            String sql="UPDATE userinfo "+"SET password='root'"+" WHERE username='王洋'";
            System.out.println(sql);
            int num=statement.executeUpdate(sql);
            if (num>0){
                System.out.println("修改成功");
            }else {
                System.out.println("修改失败");
            }


        } catch (SQLException e) {
            e.printStackTrace();
        }
        }


        }


